<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <div id="test1"></div>
        <div id="test2"></div>
        <div id="test3"></div>

        <script src="../js/react.development.js" type="text/javascript"></script>
        <script src="../js/react-dom.development.js" type="text/javascript"></script>
        <script src="../js/react.development.js" type="text/javascript"></script>

        <script type="text/babel">
            let vDom = (<h2 id={myID.toLowerCase()}><span className="red">{myData.toUpperCase()}</span></h2>);

            class MyCompant

        </script>
    </body>
</html>